Machine for bending sheet metal



(No Model.)

(LPOGOCK. MAGE-.INE FOR BENDING SHEET METAL.

j To all whom it may concern:

UNITED STATES.,

PATENT OFFICE.

OLIVER POOOOK, OE OINOINNATL OHIO.

MACHINE FOR BENDING SHEET METAL.

SPECIFICATION forming part of Letters Patent N o. 357,228, dated February 8, 1887. Application filed August 16, i886. Serial No. 211,004. (No model.)

Beit known that I, OLIvEE B Oooox, of Cin-4 cinnati,Hamilton county, Ohio, have invented new and useful Improvements in Machines for Bending Sheets of Metal, of which the following is a specification.

My invention relates more particularly to that class of machines in which rollers are used, between which sheets of Inetal are passed to cause said sheets to assume a curved form, but` is capable of other and more general application.

The nature of my invention Vconsists in the combined means for approximating and separating the rollers,.so as to allow the device to accommodate metal of different thicknesses, and also to bend the metal in a curve of any desired radius, and' the means for adjusting and holding said rollers at any distance apart that may be desired.

My invention accomplishes these ends Inore accurately and rapidly than any of the ordinary machines now in use, by the means fully explained hereinafter.

In the drawings accompanying this specification, Figure 1 is an end elevation of my machine, showing the arrangement of the ends of the rollers in relation to each other and the means of operating and adjusting them. Fig. 2 is a side elevation with a section broken to show the position of'the third roller. Fig. 3 shows an eccentric-journal-with a cored handle and a sliding catch operated by a spiral spring.

A, A', and A2 are rollers, and a a ai are the ends of the rollers. The end a is journaled in the movable box B, which is operated by the adjusting-screw b. The end ais journaled in an immovable box in the standard C, and the end oi2 is journaled in the eccentric B', which is constructed to turn in the standard C, and is operated by the cored handle E, which is connected with the eccentric B', with the sliding catch F and spiral spring e, and is adj usted toany degree of curvature by means of the notched and indexed are F'. These journals, together with the movable box B, adjustingscrew b, cored handle E, sliding catch F, spiral spring e, and notched and indexed arc F', are all duplicated at the other end ofthe rollers,

. and are fitted in a standard similar to standard C.

The roller A is provided at one end with the provided with a gear-wheel, d, with which the gear-wheel d on the end of the roller A is made to engage as the roller A is lowered toward roller A.

The operation of Iny'invention is as follows: The roller A2 is first placed in the position to accomplish the curvature desired by moving the cored handles E E to the proper places and allowing the sliding catches F F to fasten in the notches on the arcs F' F', that have the same number op'posite on the index. Then the end of the sheet of metal to be curved is placed between the 'rollers A and A', the rollers being separated, as shown in Fig. 2. Then the roller A is made to approximate the roller A by means of the adj usting-screws b b, and the gear-wheel d is made to engage the gear-wheel d, and the roller A is made to turn the roller A. As the sheet of metal is drawn through the rollers (the metal being caught between the rollers by'reason of the lowering of roller A) it comes in contact with roller A2, which has already been set to make a longer or shorter curve, as desired.

lt will be seen from the foregoing description that the means employed are simple and accurate.

I am aware that the means for approximating and separating the rollers by means of sliding or hmovable journals and adjusting-screws and eccentric-journals are neither of them new,

and l make no claim upon them separately.

What I claim as new-and of my invention is- In a sheet-metal-bending machine, the oo mthe arcs F', whereby the roller A2 is adj ustabl y movable in relation to the rollers A A', for the purposes set forth.

OLIVER POCOCK.

Attest:

CHARLES J. Inotrr, CHARLES W. HARMYER.

IOC 

